*{
    margin:0;
    padding:0;
    box-sizing: border-box;
    list-style: none;
}

.slider-container{
    width: 400px;
    min-height: 400px; 
}

.slider-container .big-image{
    width: 100%;
}

.slider-container .big-image img{
    width: 100%;
}

.small-images li{
    width: 20%;
    float:left;
    padding: 10px;
    border:solid 1px #ddd;
}

.small-images .active{
    border:solid 1px rgb(199, 52, 52);
}


.small-images li img{
    width: 100%;
}
